AF 7 days late, cramps and sore but BFN??

[Kayleaaa]

Hey all,
Getting really upset and frustrated at this point!!
AF was due (at the latest, irregular-ish cycles) 7 days ago.
7 days ago I started having cramps, nausea, sore boobs and fatigue. I've had that every day since then, with cramps so bad that I run to the toilet constantly because it feels EXACTLY like I'm about to start AF, but nothing! Just CM.
BFN every day since then, spent a small fortune on FRER's!
Has anyone had this before and a BFP?
I would just think maybe I've skipped AF this month, but last year I was pregnant (lost at 6 weeks) and I had these exact symptoms, but I hadn't tested until 8 days past AF usual date.
I can't find threads where people have had these symptoms really strongly but still BFN's :(

Can I jump on?
Just thought I'd say, currently 18 days late, only ever been 8 days late before with my irregular cycles, I called my go at 12 days late who just advised to test every 5-7 days until AF shows. She also said if AF doesn't arrive in two weeks she's do a blood test but not to worry yet.
I had brown spotting early on in the cycle so got my hopes up, she also said this could have been a light period 🤷🏻‍♀️

Finally this morning I'm spotting when I wipe so AF on her way. Just so glad to either way!